The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1985
Filed:
Jun. 20, 1983
Applicant:
Inventors:
Takaji Yonemori, Tokyo, JP;
Seiji Sagara, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355-8 ; 355 57 ;
Abstract
Variable magnification copying apparatus wherein the optical element for forming an image of the original on a photosensitive member is displaceable for magnification change. The amount of displacement is controlled on the basis of the count of pulses generated by the pulse generator. The optical element is, as desired, restored to a reference position, and then moved to an object position by counting a predetermined number of pulses.